I own a few fat dragon sets, mostly dungeon stuff. However I stopped using paper materials when I realised how much it was costing me in ink. Now I can print dirt cheap at my school, and I have recently switched to 15mm as well. Your stuff is some pretty convincing material.
Did you downscale the Fat dragon files at all? I thought that all of their stuff was around 28mm and a complete wide shot, do you think they might work if I were to downscale them to 6mm? I'm still looking for good 6mm terrain for giant monster battles.